Relaying a Private Emergency Point to a Public Emergency Point

1. A method for relaying, by an in-vehicle emergency system, a private emergency point of the vehicle to a public emergency point that is handling an emergency of the vehicle in which the in-vehicle emergency system is incorporated, the public emergency point depending on the location of the emergency, the method comprising the steps of: receiving a message from a call control node of a mobile communications network in response to an emergency call initiated by the in-vehicle emergency system, the message containing contact information of the public emergency point, and transmitting the received contact information of the public emergency point to the private emergency point.

2. The method according to claim 1 , wherein the received message is received by the in-vehicle emergency system from the public emergency point via the call control node in response to an emergency call of the in-vehicle emergency system to the public emergency point, the contact information including the contact information of a human operator handling said emergency call.

3. The method according to claim 1 , wherein the contact information contains at least one of the following pieces of information: telephone number of the public emergency point, telephone number of the human operator handling said emergency call, IP address of the public emergency point, geographical location of the public emergency point, name of the organisation operating the public emergency point, capabilities of the public emergency point.

4. The method according to claim 1 , wherein the contact information is received and transmitted in a signalling channel of the mobile communications network via which the emergency call is transmitted.

5. The method according to claim 4 , wherein the contact information is received and transmitted in an application layer of a protocol used in the signalling channel for signalling.

6. The method according to claim 4 , wherein the contact information is received and transmitted by the in-vehicle emergency system via a Fast Associated Control channel, FACCH, of the mobile communications network, or via a short message system, SMS, of the mobile communications network, or via a modified SMS across a Fast Associated Control channel, FACCH, of the mobile communications network, or via a Data Channel of the mobile communications network.

7. The method according to claim 4 , wherein the contact information is received and transmitted by the call control node via IP communication, and wherein the IP communication uses a SIP Message.

8. The method according to claim 4 , wherein the contact information is received and transmitted by the in-vehicle emergency system using a Session Initiation Protocol.

9. The method according to claim 2 , wherein the emergency call is a manually or automatically triggered emergency call for the private emergency point, wherein the in-vehicle emergency system receives a request from the private emergency point to retrieve contact information of the public emergency point, the in-vehicle emergency system initiating an emergency call to the public emergency point in response to the request from the private emergency point.

10. The method according to claim 1 , wherein the emergency call is a manually or automatically triggered emergency call for the private emergency point, wherein the in-vehicle emergency system receives a request from the private emergency point to receive contact information of the public emergency point, the method further comprising the steps of: requesting, by the in-vehicle emergency system, the contact information of the public emergency point from the call control node or the public emergency point without an emergency call to the public emergency point being set up by the in-vehicle emergency system with the request, receiving the requested contact information from the call control node or the public emergency point, and transmitting the requested contact information to the private emergency point.

11. A method for relaying, by an in-vehicle emergency system, a private emergency point of the vehicle to a public emergency point that is handling an emergency of the vehicle in which the in-vehicle emergency system is incorporated, the public emergency point depending on the location of the emergency, the method comprising the steps of: transmitting an emergency call to the private emergency point, receiving a response message from the private emergency point including a contact information of the private emergency point, transmitting the received contact information of the private emergency point to the public emergency point.

12. An in-vehicle emergency system configured to relay a private emergency point of the vehicle to a public emergency point that is handling an emergency of the vehicle in which the in-vehicle emergency system is incorporated, the public emergency point depending on the location of the emergency, the system comprising: a receiver configured to receive a message from a call control node of a mobile communications network in response to an emergency call initiated by the in-vehicle emergency system, the message containing contact information of a public emergency point, and a transmitter configured to transmit the received contact information of the public emergency point to the private emergency point of said vehicle.

13. The in-vehicle emergency system according to claim 12 , wherein the receiver is configured to receive the contact information in a signalling channel of the mobile communications network via which the emergency call is transmitted, the transmitter being configured to transmit the received contact information in the signalling channel of the mobile communications network.

14. An in-vehicle emergency system configured to relay a private emergency point of the vehicle to a public emergency point that is handling an emergency of the vehicle in which the in-vehicle emergency system is incorporated, the public emergency point depending on the location of the emergency, the system comprising: a transmitter configured to setup an emergency call to the private emergency point and to send a request message to the private emergency point a receiver configured to receive a response message from the private emergency point in response to the emergency call initiated by the in-vehicle emergency system, the response message containing contact information of the private emergency point, wherein the transmitter is further configured to transmit the received contact information of the private emergency point to the public emergency point.